水利学报2017，Vol.48Issue(7)：866-873,8.DOI:10.13243/j.cnki.slxb.20170095
基于MSA法的高心墙堆石坝地震沉降易损性分析
Seismic subsidence fragility analysis of high CRFDs based on MSA
摘要
Abstract
MSA is a fragility analysis method which is recently proposed and in view of discrete intensity factor,provides an effective approach for structural safety evaluation.However,this method is less applied in the field of earth-rockfill dams engineering.In this paper,crest settlement ratio is selected as the performance evaluation index in view of HCRFD,the seismic subsidence damage of HCRFDs was suggested dividing in mild,moderate and severe damage three standards.Considering the uncertainty of earthquake,fragility analysis is carried out with MSA,and the fragility curves and probability corresponding different damage grades are acquired,which can provide criterion and reference for the dam evaluation under the strong earthquake.In addition,seismic fragility analysis results of different stripe numbers show that decreasing the number of horizontal stripe appropriately has little influence on the result of fragility,thus it is conducive to the reduction of calculation conditions.关键词
高心墙堆石坝/地震沉降变形/易损性分析/MSA法/破坏等级Key words
high CRFDs/seismic subsidence deformation/fragility analysis/MSA method/damage grades分类
建筑与水利引用本文复制引用
庞锐,孔宪京,邹德高,徐斌..基于MSA法的高心墙堆石坝地震沉降易损性分析[J].水利学报,2017,48(7):866-873,8.基金项目
国家重点研发计划(2017YFC0404900) （2017YFC0404900）
国家自然科学基金项目(51678113,51379028,51508071) （51678113,51379028,51508071）
中央高校基本科研业务费(DUT17ZD219) （DUT17ZD219）
